possible solutions before and immediately after earthquake ...

POSSIBLE SOLUTIONS BEFORE AND IMMEDIATELY AFTER
EARTHQUAKE
PROF. CLAUDIO MODENA
Adopted methology:
In a first instance an extensive knowledge of the fabric was achieved, considering
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i) its construction history and structural evolution,
ii) damage manifested by the building after the historic seismic events and
iii) the present day crack pattern
A complete damage survey of the building was carried out, as a redefinition of
the geometrical survey provided, lacking in necessary data to feed the successive
modelling phase
iv) a wide on-site investigation campaign was carried out, including local analyses aiming at
qualitatively defining the composition of the investigated structural elements (sonic pulse
velocity tests) and at quantitatively characterize the dynamic response of relevant
portions of the complex (AVT dynamic tests).
v) Finally the seismic assessment of relevant parts of the structure, involving different
modelling strategies, was carried out.
• Global linear elastic numerical models, calibrated on the basis of the results of the
experimental phase, were used to feed local non linear numerical models
• Push-over analyses were carried out on the non linear models in order to obtain seismic
capacity curves, to be confirmed by the actual seismic damage pattern
• Limit analysis was comparatively used to define the seismic capacity of selected
macroelements, defined in the numerical models corresponding areas.
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POSSIBLE SOLUTIONS BEFORE AND IMMEDIATELY AFTER EARTHQUAKE